Strongly Coupled Chameleons and the Neutronic Quantum Bouncer
Strongly Coupled Chameleons and the Neutronic Quantum Bouncer
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DOI：
10.1103/physrevlett.107.111301
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发表时间：
2011-09-08
影响因子：
8.6
通讯作者：
Pignol, Guillaume
中科院分区：
文献类型：
--
作者：
Brax, Philippe;Pignol, Guillaume
我们考虑使用弹跳的超冷中子来检测变色龙的可能性。我们表明，在一个平面板上的变色龙场的存在会改变超冷中子在地球引力场的能级。当变色龙与核物质强耦合时，β大于或接近10（8），我们发现能级的变化将被即将到来的GRANIT实验检测到，预计灵敏度为peV的1%。我们还发现，一个非常大的耦合β大于或类似于10（11）将导致新的束缚态的距离为2 μ m，这已经排除了以前的格勒诺布尔实验。从原子光谱的精确测试中，得到的边界β小于或接近10（11），已经比上限β小于或接近10（14）好3个数量级。
We consider the potential detection of chameleons using bouncing ultracold neutrons. We show that the presence of a chameleon field over a planar plate would alter the energy levels of ultracold neutrons in the terrestrial gravitational field. When chameleons are strongly coupled to nuclear matter, beta greater than or similar to 10(8), we find that the shift in energy levels would be detectable with the forthcoming GRANIT experiment, where a sensitivity of the order of 1% of a peV is expected. We also find that an extremely large coupling beta greater than or similar to 10(11) would lead to new bound states at a distance of order 2 mu m, which is already ruled out by previous Grenoble experiments. The resulting bound, beta less than or similar to 10(11), is already 3 orders of magnitude better than the upper bound, beta less than or similar to 10(14), from precision tests of atomic spectra.